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https://github.com/a2-4am/4cade.git
synced 2024-11-27 08:50:01 +00:00
shave some bytes
This commit is contained in:
4am
parent
22b40e9d11
commit
3e504a80d8
@ -80,22 +80,25 @@ k_right_mask_aux = 8 ; must be 8
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k_current_page = 9
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k_current_page = 9
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k_switch_to_main = 10
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k_switch_to_main = 10
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k_switch_to_aux = 11
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k_switch_to_aux = 11
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k_inx_and_recalc = 12
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k_switch_to_aux_and_byte_copy = 12
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k_recalc = 13
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k_inx_and_recalc = 13
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k_set_row_count = 14
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k_recalc = 14
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k_set_first_row = 15
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k_set_row_count = 15
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k_iny = 16
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k_set_first_row = 16
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k_dey = 17
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k_iny2 = 17
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k_save_y = 18
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k_iny = 18
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k_restore_y = 19
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k_dey = 19
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k_middle_jsr = 20
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k_save_y = 20
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k_outer_jsr = 21
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k_restore_y = 21
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k_middle_branch = 22
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k_middle_jsr = 22
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k_outer_branch = 23
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k_outer_jsr = 23
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k_bitcopy = 24
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k_middle_branch = 24
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k_mask_copy_pre = 25
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k_outer_branch = 25
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k_mask_copy_post = 26
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k_mask_copy_pre = 26
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k_byte_copy = 27
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k_mask_copy_post = 27
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k_byte_copy = 28
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k_byte_copy_and_iny = 29
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k_bitcopy = 30 ; must be last token
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!source "src/fx/macros.a"
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!source "src/fx/macros.a"
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@ -179,37 +182,54 @@ NextBox dex
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; Note that several pieces overlap in order to minimize code size.
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; Note that several pieces overlap in order to minimize code size.
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; Everything from CODEGEN_COPY_START and onward is copied to zero page for
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; Everything from CODEGEN_COPY_START and onward is copied to zero page for
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; the code generation phase on program startup.
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; the code generation phase on program startup.
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EDGE_LEFT_MASK_MAIN = $01 ; address $01 to match token
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EDGE_RIGHT_MASK_MAIN = $02 ; address $02 to match token
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LEFT_MASK_MAIN = $03 ; address $03 to match token
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RIGHT_MASK_MAIN = $04 ; address $04 to match token
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EDGE_LEFT_MASK_AUX = $05 ; address $05 to match token
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EDGE_RIGHT_MASK_AUX = $06 ; address $06 to match token
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LEFT_MASK_AUX = $07 ; address $07 to match token
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RIGHT_MASK_AUX = $08 ; address $08 to match token
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CODEGEN_COPY_START
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CODEGEN_COPY_START
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!pseudopc 0 {
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!pseudopc 9 {
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RTS0
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RTS0
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rts ; also terminates MainLoop
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RTS0_E
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;
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EDGE_LEFT_MASK_MAIN ; must be at address $01 to match token
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!byte $FD
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EDGE_RIGHT_MASK_MAIN ; must be at address $02 to match token
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!byte $FD
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LEFT_MASK_MAIN ; must be at address $03 to match token
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!byte $FD
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RIGHT_MASK_MAIN ; must be at address $04 to match token
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!byte $FD
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EDGE_LEFT_MASK_AUX ; must be at address $05 to match token
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!byte $FD
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EDGE_RIGHT_MASK_AUX ; must be at address $06 to match token
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!byte $FD
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LEFT_MASK_AUX ; must be at address $07 to match token
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!byte $FD
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RIGHT_MASK_AUX ; must be at address $08 to match token
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!byte $FD
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SWITCH_TO_MAIN
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SWITCH_TO_MAIN
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sta $C054
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sta $C054
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SWITCH_TO_MAIN_E
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SWITCH_TO_MAIN_E
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rts ; also terminates MainLoop
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RTS0_E
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;
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;
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SWITCH_TO_AUX_AND_BYTE_COPY
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SWITCH_TO_AUX
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SWITCH_TO_AUX
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sta $C055
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sta $C055
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lda auxsrc_hgrhi, x
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lda auxsrc_hgrhi, x
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sta src+1
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sta src+1
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SWITCH_TO_AUX_E
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SWITCH_TO_AUX_E
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BYTECOPY_AND_INY
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BYTECOPY
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lda (src), y
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sta (dst), y
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BYTECOPY_E
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SWITCH_TO_AUX_AND_BYTE_COPY_E
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INY2
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INY1
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iny
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INY1_E
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BYTECOPY_AND_INY_E
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iny
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INY2_E
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;
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DEY1
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dey
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DEY1_E
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;
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SAVE_Y
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sty tmpy
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SAVE_Y_E
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;
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RESTORE_Y
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ldy tmpy
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RESTORE_Y_E
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;
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;
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INX_AND_RECALC
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INX_AND_RECALC
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inx
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inx
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@ -244,38 +264,19 @@ BIT_FOR_CLEAR
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!byte $29 ; (AND #$44 opcode)
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!byte $29 ; (AND #$44 opcode)
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MASKCOPY_PRE_E
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MASKCOPY_PRE_E
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;
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;
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MASKCOPY_POST
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eor (dst), y
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codegen_pieces ; address of each of the pieces (on zero page, so 1 byte)
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sta (dst), y
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!byte <RTS0
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MASKCOPY_POST_E
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; these 8 addresses are never used so we stuff 8 bytes of unrelated data here
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;!byte <EDGE_LEFT_MASK_MAIN
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;!byte <EDGE_RIGHT_MASK_MAIN
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;!byte <LEFT_MASK_MAIN
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;!byte <RIGHT_MASK_MAIN
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;!byte <EDGE_LEFT_MASK_AUX
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;!byte <EDGE_RIGHT_MASK_AUX
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;!byte <LEFT_MASK_AUX
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;!byte <RIGHT_MASK_AUX
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;
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;
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BYTECOPY
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lda (src), y
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sta (dst), y
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BYTECOPY_E
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;
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DEY1
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dey
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DEY1_E
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;
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INY1
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iny
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INY1_E
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;
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SAVE_Y
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sty tmpy
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SAVE_Y_E
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;
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RESTORE_Y
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ldy tmpy
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RESTORE_Y_E
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;
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MIDDLE_JSR
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!byte $20,$47
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MIDDLE_JSR_E
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OUTER_JSR
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!byte $20,$48
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OUTER_JSR_E
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MIDDLE_BRANCH
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MIDDLE_BRANCH
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dec rowcount
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dec rowcount
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!byte $10,$C8
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!byte $10,$C8
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@ -285,54 +286,16 @@ OUTER_BRANCH
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dec rowcount
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dec rowcount
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!byte $10,$C6
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!byte $10,$C6
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OUTER_BRANCH_E
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OUTER_BRANCH_E
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;
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codegen_piece_lengths ; length of each of the pieces
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!byte RTS0_E-RTS0
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!byte 1 ; edge left mask main
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!byte 1 ; edge right mask main
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!byte 1 ; left mask main
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!byte 1 ; right mask main
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!byte 1 ; edge left mask aux
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!byte 1 ; edge right mask aux
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!byte 1 ; left mask aux
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!byte 1 ; right mask aux
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!byte 1 ; current page
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!byte SWITCH_TO_MAIN_E-SWITCH_TO_MAIN
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!byte SWITCH_TO_AUX_E-SWITCH_TO_AUX
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!byte INX_AND_RECALC_E-INX_AND_RECALC
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!byte RECALC_E-RECALC
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!byte SET_ROW_COUNT_E-SET_ROW_COUNT
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!byte SET_FIRST_ROW_E-SET_FIRST_ROW
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!byte INY1_E-INY1
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!byte DEY1_E-DEY1
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!byte SAVE_Y_E-SAVE_Y
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!byte RESTORE_Y_E-RESTORE_Y
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!byte MIDDLE_JSR_E-MIDDLE_JSR
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!byte OUTER_JSR_E-OUTER_JSR
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!byte MIDDLE_BRANCH_E-MIDDLE_BRANCH
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!byte OUTER_BRANCH_E-OUTER_BRANCH
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!byte $FF ; negative length -> do special bitcopy logic during codegen
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!byte MASKCOPY_PRE_E-MASKCOPY_PRE
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!byte MASKCOPY_POST_E-MASKCOPY_POST
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!byte BYTECOPY_E-BYTECOPY
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codegen_pieces ; address of each of the pieces (on zero page, so 1 byte)
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!byte <RTS0
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!byte <EDGE_LEFT_MASK_MAIN
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!byte <EDGE_RIGHT_MASK_MAIN
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!byte <LEFT_MASK_MAIN
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!byte <RIGHT_MASK_MAIN
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!byte <EDGE_LEFT_MASK_AUX
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!byte <EDGE_RIGHT_MASK_AUX
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!byte <LEFT_MASK_AUX
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!byte <RIGHT_MASK_AUX
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!byte <codegen_dst ; current page
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!byte <codegen_dst ; current page
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!byte <SWITCH_TO_MAIN
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!byte <SWITCH_TO_MAIN
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!byte <SWITCH_TO_AUX
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!byte <SWITCH_TO_AUX
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!byte <SWITCH_TO_AUX_AND_BYTE_COPY
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!byte <INX_AND_RECALC
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!byte <INX_AND_RECALC
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!byte <RECALC
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!byte <RECALC
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!byte <SET_ROW_COUNT
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!byte <SET_ROW_COUNT
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!byte <SET_FIRST_ROW
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!byte <SET_FIRST_ROW
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!byte <INY2
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!byte <INY1
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!byte <INY1
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!byte <DEY1
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!byte <DEY1
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!byte <SAVE_Y
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!byte <SAVE_Y
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@ -341,18 +304,61 @@ codegen_pieces ; address of each of the pieces (on zero pa
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!byte <OUTER_JSR
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!byte <OUTER_JSR
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!byte <MIDDLE_BRANCH
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!byte <MIDDLE_BRANCH
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!byte <OUTER_BRANCH
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!byte <OUTER_BRANCH
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!byte 0 ; bitcopy pseudo-opcode has no piece of its own
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!byte <MASKCOPY_PRE
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!byte <MASKCOPY_PRE
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!byte <MASKCOPY_POST
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!byte <MASKCOPY_POST
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!byte <BYTECOPY
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!byte <BYTECOPY
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!byte <BYTECOPY_AND_INY
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;!byte 0 ; bitcopy pseudo-opcode has no piece of its own
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codegen_stage
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codegen_piece_lengths ; length of each of the pieces
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!byte 27
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!byte RTS0_E-RTS0
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codegen_maskindex
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; these 8 lengths are never used so we stuff 8 bytes of unrelated data here
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!byte 0
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;!byte 1 ; edge left mask main
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;!byte 1 ; edge right mask main
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;!byte 1 ; left mask main
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;!byte 1 ; right mask main
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;!byte 1 ; edge left mask aux
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;!byte 1 ; edge right mask aux
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;!byte 1 ; left mask aux
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;!byte 1 ; right mask aux
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;
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MASKCOPY_POST
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eor (dst), y
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sta (dst), y
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MASKCOPY_POST_E
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;
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MIDDLE_JSR
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!byte $20,$47
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MIDDLE_JSR_E
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OUTER_JSR
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!byte $20,$48
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OUTER_JSR_E
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;
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!byte 1 ; current page
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!byte SWITCH_TO_MAIN_E-SWITCH_TO_MAIN
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!byte SWITCH_TO_AUX_E-SWITCH_TO_AUX
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!byte SWITCH_TO_AUX_AND_BYTE_COPY_E-SWITCH_TO_AUX_AND_BYTE_COPY
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!byte INX_AND_RECALC_E-INX_AND_RECALC
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!byte RECALC_E-RECALC
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!byte SET_ROW_COUNT_E-SET_ROW_COUNT
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!byte SET_FIRST_ROW_E-SET_FIRST_ROW
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!byte INY2_E-INY2
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!byte INY1_E-INY1
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!byte DEY1_E-DEY1
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!byte SAVE_Y_E-SAVE_Y
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!byte RESTORE_Y_E-RESTORE_Y
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!byte MIDDLE_JSR_E-MIDDLE_JSR
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!byte OUTER_JSR_E-OUTER_JSR
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!byte MIDDLE_BRANCH_E-MIDDLE_BRANCH
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!byte OUTER_BRANCH_E-OUTER_BRANCH
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!byte MASKCOPY_PRE_E-MASKCOPY_PRE
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!byte MASKCOPY_POST_E-MASKCOPY_POST
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!byte BYTECOPY_E-BYTECOPY
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!byte BYTECOPY_AND_INY_E-BYTECOPY_AND_INY
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;!byte $FF ; negative length -> do special bitcopy logic during codegen
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BuildDrawingRoutineFrom
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BuildDrawingRoutineFrom
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sta <codegen_token_src
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sta <codegen_token_src ; STA opcode ($85) also serves as 'length' of k_bitcopy token
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BuildDrawingRoutine
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BuildDrawingRoutine
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ldy #0
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ldy #0
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sty <codegen_token_x
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sty <codegen_token_x
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@ -379,22 +385,25 @@ ProcessBitcopyToken
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bitcopy_mask=*+1
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bitcopy_mask=*+1
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lda $FD ; SMC
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lda $FD ; SMC
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beq ExitProcessToken ; copymask=0 -> nothing to generate
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beq ExitProcessToken ; copymask=0 -> nothing to generate
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bmi + ; copymask>$80 -> assume full byte
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bmi + ; copymask>=$80 -> assume full byte
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lda #k_mask_copy_pre
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lda #k_mask_copy_pre
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jsr ProcessToken
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jsr ProcessToken
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lda #1
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sta <piece_length
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lda <bitcopy_mask
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lda <bitcopy_mask
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jsr ProcessToken
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jsr ProcessMaskToken
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lda #k_mask_copy_post
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lda #k_mask_copy_post
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+HIDE_NEXT_2_BYTES
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+HIDE_NEXT_2_BYTES
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+ lda #k_byte_copy
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+ lda #k_byte_copy
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; execution falls through here
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; execution falls through here
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ProcessToken
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ProcessToken
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tax
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tax
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lda <codegen_piece_lengths, x
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lda <codegen_piece_lengths, x
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bmi ProcessBitcopyToken ; only bitcopy has length>$80
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bmi ProcessBitcopyToken ; only bitcopy has length>=$80
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sta <piece_length
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sta <piece_length
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lda <codegen_pieces, x
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lda <codegen_pieces, x
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; execution falls through here
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ProcessMaskToken
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sta <piece_src
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sta <piece_src
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ldx #0
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ldx #0
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-
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-
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@ -411,6 +420,11 @@ piece_length=*+1
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ExitProcessToken
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ExitProcessToken
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rts
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rts
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codegen_stage
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!byte 27
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codegen_maskindex
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!byte 0
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CopyAuxDHGRToMain
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CopyAuxDHGRToMain
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; X=0
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; X=0
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sta $C003 ; copy $4000-5FFF/aux to $9000-AFFF/main
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sta $C003 ; copy $4000-5FFF/aux to $9000-AFFF/main
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@ -489,7 +503,7 @@ BuildDrawingRoutines
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; copy codegen data to zero page
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; copy codegen data to zero page
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ldx #0
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ldx #0
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- lda CODEGEN_COPY_START, x
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- lda CODEGEN_COPY_START, x
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sta $00, x
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sta $09, x
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inx
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inx
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bne -
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bne -
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;X=0 here
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;X=0 here
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@ -568,8 +582,7 @@ BuildStage1And0
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; part of the box (labeled '0' in diagram above).
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; part of the box (labeled '0' in diagram above).
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STAGE0
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STAGE0
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!byte k_set_first_row
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!byte k_set_first_row
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!byte k_iny
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!byte k_iny2
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!byte k_iny
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!byte k_recalc
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!byte k_recalc
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!byte k_bitcopy, k_left_mask_main
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!byte k_bitcopy, k_left_mask_main
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!byte k_switch_to_aux
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!byte k_switch_to_aux
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@ -579,35 +592,28 @@ STAGE0
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!byte k_bitcopy, k_left_mask_aux
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!byte k_bitcopy, k_left_mask_aux
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!byte k_switch_to_aux
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!byte k_switch_to_aux
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!byte k_bitcopy, k_left_mask_aux
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!byte k_bitcopy, k_left_mask_aux
|
||||||
!byte k_switch_to_main
|
|
||||||
!byte k_rts ; also serves as an end-of-template marker
|
!byte k_rts ; also serves as an end-of-template marker
|
||||||
|
|
||||||
; Template for 'stage 1' routine (copy01), which copies the pixels
|
; Template for 'stage 1' routine (copy01), which copies the pixels
|
||||||
; around the innermost box (labeled '1' in diagram above).
|
; around the innermost box (labeled '1' in diagram above).
|
||||||
STAGE1
|
STAGE1
|
||||||
!byte k_set_first_row
|
!byte k_set_first_row
|
||||||
!byte k_iny
|
!byte k_iny2
|
||||||
!byte k_iny
|
|
||||||
!byte k_recalc
|
!byte k_recalc
|
||||||
!byte k_byte_copy
|
!byte k_byte_copy
|
||||||
!byte k_switch_to_aux
|
!byte k_switch_to_aux_and_byte_copy
|
||||||
!byte k_byte_copy
|
|
||||||
!byte k_switch_to_main
|
!byte k_switch_to_main
|
||||||
!byte k_inx_and_recalc
|
!byte k_inx_and_recalc
|
||||||
!byte k_byte_copy
|
!byte k_byte_copy
|
||||||
!byte k_switch_to_aux
|
!byte k_switch_to_aux_and_byte_copy
|
||||||
!byte k_byte_copy
|
|
||||||
!byte k_switch_to_main
|
!byte k_switch_to_main
|
||||||
!byte k_inx_and_recalc
|
!byte k_inx_and_recalc
|
||||||
!byte k_byte_copy
|
!byte k_byte_copy
|
||||||
!byte k_switch_to_aux
|
!byte k_switch_to_aux_and_byte_copy
|
||||||
!byte k_byte_copy
|
|
||||||
!byte k_switch_to_main
|
!byte k_switch_to_main
|
||||||
!byte k_inx_and_recalc
|
!byte k_inx_and_recalc
|
||||||
!byte k_byte_copy
|
!byte k_byte_copy
|
||||||
!byte k_switch_to_aux
|
!byte k_switch_to_aux_and_byte_copy
|
||||||
!byte k_byte_copy
|
|
||||||
!byte k_switch_to_main
|
|
||||||
!byte k_rts ; also serves as an end-of-template marker
|
!byte k_rts ; also serves as an end-of-template marker
|
||||||
|
|
||||||
; Template for stages 2-8 (copy02..copy08)
|
; Template for stages 2-8 (copy02..copy08)
|
||||||
@ -620,8 +626,7 @@ MIDDLE_STAGE
|
|||||||
;-
|
;-
|
||||||
!byte k_inx_and_recalc
|
!byte k_inx_and_recalc
|
||||||
!byte k_bitcopy, k_left_mask_main
|
!byte k_bitcopy, k_left_mask_main
|
||||||
!byte k_iny
|
!byte k_iny2
|
||||||
!byte k_iny
|
|
||||||
!byte k_bitcopy, k_right_mask_main
|
!byte k_bitcopy, k_right_mask_main
|
||||||
!byte k_switch_to_aux
|
!byte k_switch_to_aux
|
||||||
!byte k_bitcopy, k_right_mask_aux
|
!byte k_bitcopy, k_right_mask_aux
|
||||||
@ -633,8 +638,7 @@ MIDDLE_STAGE
|
|||||||
!byte k_inx_and_recalc
|
!byte k_inx_and_recalc
|
||||||
!byte k_bitcopy, k_edge_left_mask_main
|
!byte k_bitcopy, k_edge_left_mask_main
|
||||||
!byte k_iny
|
!byte k_iny
|
||||||
!byte k_byte_copy
|
!byte k_byte_copy_and_iny
|
||||||
!byte k_iny
|
|
||||||
!byte k_bitcopy, k_edge_right_mask_main
|
!byte k_bitcopy, k_edge_right_mask_main
|
||||||
!byte k_switch_to_aux
|
!byte k_switch_to_aux
|
||||||
!byte k_bitcopy, k_edge_right_mask_aux
|
!byte k_bitcopy, k_edge_right_mask_aux
|
||||||
@ -642,7 +646,6 @@ MIDDLE_STAGE
|
|||||||
!byte k_byte_copy
|
!byte k_byte_copy
|
||||||
!byte k_dey
|
!byte k_dey
|
||||||
!byte k_bitcopy, k_edge_left_mask_aux
|
!byte k_bitcopy, k_edge_left_mask_aux
|
||||||
!byte k_switch_to_main
|
|
||||||
!byte k_rts ; also serves as an end-of-template marker
|
!byte k_rts ; also serves as an end-of-template marker
|
||||||
|
|
||||||
; Template for stages 9-15 (copy09..copy0F)
|
; Template for stages 9-15 (copy09..copy0F)
|
||||||
@ -654,10 +657,8 @@ OUTER_STAGE
|
|||||||
;-
|
;-
|
||||||
!byte k_inx_and_recalc
|
!byte k_inx_and_recalc
|
||||||
!byte k_bitcopy, k_left_mask_main
|
!byte k_bitcopy, k_left_mask_main
|
||||||
!byte k_iny
|
!byte k_iny2
|
||||||
!byte k_iny
|
!byte k_iny2
|
||||||
!byte k_iny
|
|
||||||
!byte k_iny
|
|
||||||
!byte k_bitcopy, k_right_mask_main
|
!byte k_bitcopy, k_right_mask_main
|
||||||
!byte k_switch_to_aux
|
!byte k_switch_to_aux
|
||||||
!byte k_bitcopy, k_right_mask_aux
|
!byte k_bitcopy, k_right_mask_aux
|
||||||
@ -669,12 +670,9 @@ OUTER_STAGE
|
|||||||
!byte k_inx_and_recalc
|
!byte k_inx_and_recalc
|
||||||
!byte k_bitcopy, k_edge_left_mask_main
|
!byte k_bitcopy, k_edge_left_mask_main
|
||||||
!byte k_iny
|
!byte k_iny
|
||||||
!byte k_byte_copy
|
!byte k_byte_copy_and_iny
|
||||||
!byte k_iny
|
!byte k_byte_copy_and_iny
|
||||||
!byte k_byte_copy
|
!byte k_byte_copy_and_iny
|
||||||
!byte k_iny
|
|
||||||
!byte k_byte_copy
|
|
||||||
!byte k_iny
|
|
||||||
!byte k_bitcopy, k_edge_right_mask_main
|
!byte k_bitcopy, k_edge_right_mask_main
|
||||||
!byte k_switch_to_aux
|
!byte k_switch_to_aux
|
||||||
!byte k_bitcopy, k_edge_right_mask_aux
|
!byte k_bitcopy, k_edge_right_mask_aux
|
||||||
@ -686,7 +684,6 @@ OUTER_STAGE
|
|||||||
!byte k_byte_copy
|
!byte k_byte_copy
|
||||||
!byte k_dey
|
!byte k_dey
|
||||||
!byte k_bitcopy, k_edge_left_mask_aux
|
!byte k_bitcopy, k_edge_left_mask_aux
|
||||||
!byte k_switch_to_main
|
|
||||||
!byte k_rts ; also serves as an end-of-template marker
|
!byte k_rts ; also serves as an end-of-template marker
|
||||||
!if >* != >STAGE0 {
|
!if >* != >STAGE0 {
|
||||||
!error "Templates are not all on same page"
|
!error "Templates are not all on same page"
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user